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Multiple Choice
In the context of cell division and reproduction, what is a fertilized egg called?
A
Embryo
B
Zygote
C
Gamete
D
Blastula
Verified step by step guidance
1
Step 1: Understand the context of the question, which is related to cell division and reproduction. This involves the process of fertilization, where a sperm cell (male gamete) and an egg cell (female gamete) combine.
Step 2: Recall the terminology used in biology for the stages of development after fertilization. A fertilized egg is the result of the union of the sperm and egg, forming a single cell.
Step 3: Define the term 'zygote.' A zygote is the initial cell formed when two gametes fuse during fertilization. It is the earliest developmental stage of a new organism.
Step 4: Differentiate between the other terms provided in the options: 'Embryo' refers to a later stage of development after the zygote undergoes multiple rounds of cell division; 'Blastula' is a hollow structure formed during early embryonic development; 'Gamete' refers to the reproductive cells (sperm and egg) before fertilization.
Step 5: Conclude that the correct term for a fertilized egg is 'zygote,' as it represents the single-cell stage immediately following fertilization.